worn out AV port

[ddd1234]

The video becomes fuzzy on my PC engine Duo from time to time, so I need to replace the AV port.

How can do this? I can't find any help on the internet.

[turbokon]

Might just need to resolder the joints to the pcb.

[ddd1234]

Might just need to resolder the joints to the pcb.

I will look into that. But When I partly insert the AV cable into the port, it works fine. 

[SignOfZeta]

Do you have an original cable or one of those pieces of crap TZD was selling a while back?

[Keith Courage]

I 2nd double checking a possible resolder on the board. I have seen this around %50 of the time with video issues on Duos

[ddd1234]

Do you have an original cable or one of those pieces of crap TZD was selling a while back?

I am using this AV cord for my Duo-R.

[NightWolve]

I had a problem with my US Turbo Duo (all original, bought in '93 as TTi went under) where the yellow composite RCA plug was faulty, so the video would fade in & out and I had to move it around all the time so that it would stabilize, etc. I got tired of this so eventually, I decided to replace it. I cut it off, got a RCA plug from some other cable, did the needed wire stripping, twisting of the copper wiring together and taping, etc. A couple of years later though, it started giving me problems again because I had been lazy and didn't solder the connections together the first time around. Twisting copper wires together isn't good enough and with gradual movement, conductivity becomes an issue, etc. Point is, if that is the problem and you do this, make sure to solder the wiring so you won't have to deal with that issue again (and yes, I finally did it in my case, and I cleaned the contact tips with a SOS pad - no more issues now). The other possibility has been pointed out about having to open the unit up and resoldering the AV Out mount.

EDIT: Oh OK, I skimmed over the first time but now see that what you pointed out definitely indicates the problem is at the AV out area. A contact issue when the AV plug is fully inserted. Well, if you can try to clean the pins with a trimmed q-tip or whatever and alcohol, that might be helpful (was in my case because of dust accumulation given that I leave most of my unused gaming hardware in the attic), but it sounds more like the tightness of the receiving pins within the unit are worn and don't make good contact after the cable is fully inserted.

[ddd1234]

but it sounds more like the tightness of the receiving pins within the unit are worn and don't make good contact after the cable is fully inserted.

I believe this is the problem. But I will try cleaning the contacts.

[Ji-L87]

I have something similar. The cord isn't that a tight fit, and since it's a bit big and heavy, it tends not to go straight out of the AV port, but a at small downwards angle. Moving it around causes effects both image and sound to change but normally it works okay.

[SignOfZeta]

Do you have an original cable or one of those pieces of crap TZD was selling a while back?

I am using this AV cord for my Duo-R.

That's the real one.

[Necromancer]

That's the real one.

So I know what to look out for in the future, what's the difference between the originals and the crappy ones?

[Frank_fjs]

So I know what to look out for in the future, what's the difference between the originals and the crappy ones?

The crappy ones usually have very thin pins. This isn't a PC Engine cable but it gives you an idea of the pin size:

[SignOfZeta]

That's the real one.

So I know what to look out for in the future, what's the difference between the originals and the crappy ones?

On the original the rubber casing around the DIN plug is needlessly thick. Also, on the RCA ends the rubber is smooth all the way to the end. Most RCA plugs will have a lot more surface texture for grip or whatever and usually show some metal at the end, the real Duo cables don't.

[Necromancer]

I see.  Thanks, you two.